Time division multichannel random code phase-modulation shipborne collision-proof radar

Abstract

The invention relates to the technical field of radio positioning, in particular to a time division multichannel random code phase-modulation shipborne collision-proof radar. A mast or the top of a ship is provided with a receiving / emitting two-purpose quasi-optical integrated dielectric lens antenna annular array; a DSP encoder pulses perform scanning so as to omni-directionally guard against a target possibly collided on a water surface; data of a water photographic sensor, a ship speed sensor and a global positioning system (GPS) sensor access an MCU control time division circuit to generate time division millimeter-wave multichannel random codes for phase modulation, and are emitted through an upconverter, an R / T3, a frequency multiplier and power amplifier, an R / T2, an optical circulator, a beam switch and an antenna array; and back waves are subjected to processing control in the DSP and the MCU through the antenna array, the beam switch, the optical circulator, an R / T1, a low noise high frequency amplifier, a fourth-harmonic mixer, an intermediate frequency amplifier, a time division circuit, and a related multichannel signal extraction module. The radar ensures that adjacent ships in the same water area sail without mutual interference and operate in a coexisting way, has high electromagnetic compatibility EMC, inhibits false-alarm and determines positions, distances and relative speeds of targets through the DSP when meeting multiple targets, displays three-dimensional images and identifies a target closest to the ship through a CRT, performs the audible and visualalarm if the distance of the target is smaller than a safety distance, intelligently avoids a barrier or reduces speed if the distance of the target is approximate to a danger distance, and controlsand references the water photography to combine the ship speed and the current position data provided by the GPS to make a choice, thereby obviously improving the sailing safety of the ship.

Description

technical field [0001] The invention relates to the technical field of radio wave transmission and reception to detect target azimuth, distance and speed, in particular to a time-division multi-channel random code phase modulation marine anti-collision radar. Background technique [0002] At present, with the rapid development of ocean shipping and inland river and lake shipping and fishery, a large number of ships are increasing, ports and waterways are becoming more and more crowded, and ships are often overloaded and speeding, especially when two or more ships meet, their inertial forces impact and set off large waves , affecting the course is not easy to operate correctly, causing ships to collide with each other or hit bridge piers, and in severe cases, the ship sinks, and even the bridge collapses. The probability of accidents is greater in stormy weather. The application of radar anti-collision in ocean shipping, fishery production, and river and lake shipping is deve...

AI Technical Summary

Problems solved by technology

In addition, simple monitors are difficult to distinguish adjacent targets, cannot display multiple target panoramic images, and lack early warning for relative positions, distances, and moving speeds

The existing anti-collision radar lacks the function of using sensor signals to form a closed-loop control, lacks the adaptive control of the antenna in the water environment and the intelligent control of automatic obstacle avoidance and deceleration, and the poor visibility or navigation distress cannot help the driver in time to avoid danger and avoid accidents.

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